DE1729769A1 - Device for producing at least one longitudinal fold on a moving strip of flexible material - Google Patents

Description

DR EWIEGAND 2000 HAMBURG 1, August 26th

MÖNCHEN UALUNDAMM26

DIPL.ING. W. NIEMANN T ^ ON = 3304.5

HAMBURG
PATENT LAWYERS

W .21746 / 65 VEl

Pirelli Societä per Azioni,

Milan (Italy) ^

Device to produce at least one longitudinal fold on a moving strip of pliable material.

The invention relates to a device for producing at least one longitudinal fold on a moving strip of flexible material, in particular on a strip of rubberized woven material, which is made up of cords, ie which is without a joint, to act as an annular reinforcing structure in pneumatic tires for motor vehicles serve, and which are provided with a radial carcass. A radial carcass is to be understood as a carcass in which the cords lie essentially in radial planes extending through the longitudinal axis of the wheel. »

The annular reinforcement structures are usually formed by two superimposed strips, the each folded around itself along a line that is

but shifted with respect to the striped central linden tree is, or by a single strip that runs around itself lengthways always in a direction parallel to the center line is folded over twice.

Due to the function of these annular stiffening structures, it is imperative that the distance between the fold line and the edges of the strip forming the molding are constant over the entire length of the strip is.

fe · To get a strip that meets these requirements it is therefore necessary to solve some problems both around the strip during its feeding centering of the folding device, as well as folding or folding over the strip, since that which forms the strip Gord fabric can be deformed in an irregular manner, which can be easily achieved by inclined warp threads and through Rubber is formed in a plastic state.

The essence of the invention is a device for producing one or more longitudinal folds on one

* Moving strips of flexible material with the greatest accuracy and without creating irregular deformations of the strip.

The device has at least one centering device on, which controls the position of the two edges of the strip, and a folding device which by at least an annular air pipe is formed, which

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cooperates with at least one disc or equivalent elements (in the present case entrained disks), which are arranged in the plane that passes through the central circumferential plane of the air tube, further through at least one pair of pins whose axes correspond to that of the air tube stand vertically, and which are intended to press the bands of the strip together near the fold and by at least a second pair of "rollers, which are parallel to the first pair and which hold the folded strip should compress over its entire width.

These and other features of the invention are evident from the ™ The following description emerges in which a preferred embodiment of the invention in conjunction with the drawing for example is explained.

Fig. 1 is a general front view of a device according to the invention. FIG. 2 is a general plan view of that of FIG. 1

illustrated facility. Fig. J is a front view of the table for splicing

or assembling the ;; u folding strip g and the first hanger (storage location) for it.

Figure 4 is a top plan view of the details of Figure 4 . FIG. 5 is a side view along line VV of FIG. 1 of the centering device for the outfolding strip.

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Pig. 6 is a section on line VI-VI of Pig. 5.

Pig. Fig. 7 is a front view showing the structure of the folding stations and the mechanism for winding the folded strip. \

Figure 8 is a plan view of the parts of the pig. 7. ' Fig. 9 is a vertical section on the line IX-IX

the pig. 7. 4

Fig.10 is a section of the first folding station according to

Line XX the Pig. 7 ·? ^;

Fig. 11 is a partial section of a detail of the Me- '£ mechanism for actuating the air tube (s)

of the folding stations. [.

FIG. 12 is a top plan view of the control mechanism of FIG

i two pairs of rollers with vertical axes of the j

i urnf alts tat ions. I.

Pig.13 is a section through the pair of rollers and their $ Control mechanisms according to line XIII-XIII of the I Pig. 12. I.

Fig. 14 is a section on line XIV-XIV of Pig. 12. | V / ie from the general representations in the Pig. I and 2 can be seen, the embodiment of the invention on: a table 1 for joining the diagonally cut cord fabrics, which are cut by a shearing machine in the Drawings is not shown, a first hanger point 2 for storing the woven fabric strip, a second hanger auxiliary point J, a device 4 for.

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Centering of the strip with respect to the folding units, a first splitting station 5> a third suspension point 6, a second centering device 1, a second splitting station δ and a grouping 9 for winding up the folded strip.

The table 1 (Figs. 3 and 4) is supported by a plate 10 and post 11 is formed.

Idle slide rollers 12, 15, • 14 are arranged on the plate 10 and are intended to facilitate the feeding of the pieces of woven fabric to the connecting table 1. The table 1 ™: is provided with a photoelectric cell 15 for indicating possible interruptions, in the feed of the cloth strip and with a foot control lever 16 carried by springs 17 and which controls the feed of the strip by a microswitch 18 should stalten or turn off. The table 1 also carries an empty roller Iy, which is intended to keep the woven fabric strip with the plate 10 of the table 1 in contact.

The Speicherstelie 2 ^(i? Ig. 3 and 4) has an overall "

set up, which is formed by posts 20 and struts or strips 21, 22, 23 and 24. The bars 23 carry a table 25 on which two electric motors 2o and k'J are arranged, which are each connected by means of drive belts 2o and 29 to pulleys 30 and 31, which are wedged on rollers 32 and 33, on which H iuti disks 34 and 35 are wedged, each rait-tel

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"•1

Belts 36 and 37 connected to pulleys 38 and 39 are, which are firmly connected for the purpose of rotary movement with rollers 40 and 4l.

With the upper part of the strips 24 are arms 42, 43, 44 and 45 connected, which respectively empty rollers 46 and 47 wear. The posts 20 are furthermore with empty guide rollers 48, 49, 50 and 51 and with two photoelevctrischen Cells 52 and 53 provided.

The storage location 2 is immediately followed by a hanging or storage location 3 (Pig. 1), which also has two photoelectric cells 54 and 55 is provided so as to to ensure a uniform feed of the strip to the centering device 4.

This device (Pig. 5, 6, 7 and 8) is attached to the frame 56 by means of a support strip 57 which plates 58 and 59 are attached. The top ends of the plates 58,59 bear bearing parts 60 on which a hollow roller 6l is rotatably arranged. . ,

Below the hollow roller oil, a graduated scale 62 is provided on the plates 58 and 59, on which guides 63 and 64 are arranged, which are provided with Ek test screws 65 and 66 . The plates and 59 are provided with slots 67, into which threaded pins 68 and 69 are inserted, which are firmly connected to the support bar 57 and which serve to secure the roller 61 and the scale 62 at the desired height.

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place.

The frame 56 carries rollers 70 and 71 viaagerechte> the stiOmaufwärts the first Umfalt stat ion are arranged. This is formed (Fig. 7 > o, 9) by a thin disk 72 which has a horizontal axis and is arranged by a ball bearing 73 at a bearing 7 ^; is0, which is supported by a profile rod 75 is firmly seated plural marriage to the frame 56 and by a roller 76 which is coated with Kautschuli and disposed through ball bearings 77 and 7 at a bearing point 79, \ before WEL with the upper end a hollow cylinder oO is firmly connected, which is inserted into a second hollow cylinder 8l, which extends upward from an arm 82 which is firmly connected to the profile bar 75. A pin 83, which is displaceable in the longitudinal direction and has a large head and a lower threaded end with which a nut 84 is in engagement, is passed in the axial direction through the hollow cylinder 80.

The hollow cylinder 80 is seen with an inner flange 85 / against which the lower end of a helical spring 86, which is wound around the pin 83 and carries the head of the pin 83 at the opposite end.

The hollow cylinders 80 and 8l are each provided with shoulders Hj and 88 which are connected to one another by means of an adjusting screw g9. The roller 76 is therefore in elastic engagement with the disk 71.

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The second folding station (Pig. 7, 8, 10 and 11) is formed by two thin disks 90 and 91, which are in alignment with the disk 72, and each of which is placed by means of a ball bearing 92 on a bearing pin 93 which is supported by a is supported on the frame 56 attached angle rod, and formed by an annular air tube 9 ^, the center circumferential plane with the plane of the disks 90 and 91 coincides. The pulley 72 of the first folding or folding station and the pulleys 90 and 91 of the second folding or folding station are connected to one another by means of a belt 95, which is generally made of fabric or metal cords, and the grooved peripheral edges of the disks is embedded. The air tube 94 is rotatably arranged by ball bearings 96 and 97 on a bearing part 98 which is inserted and fixed by a pin in a forked element 100, into which a second pin 102 is inserted and fixed by a pin 101, and the pin 102 becomes mounted in a bracket 10J attached to the frame 56 in such a way that it can rotate about its own axis. A lever 104 is attached to the end of the pin 102 opposite that to which the forked member 100 is attached. Furthermore, a sector 105 is fixedly connected to the lever 104 and the forked element 100 (FIG. 11), which is provided with a groove IO6, in which a lock 107 can engage, which against the sector

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105 pressed by a pretensioned coil spring IO8 which is inserted into a cylinder 109 which is firmly connected to the frame 56. The compressive force of the Spring IO8 can be adjusted by means of a screw 110 against which one end of the spring 108 rests. A carrier 111 fixedly connected to the frame 56 carries the forked element 100 when the air tube 9 ^ against the Washers 90 and 91 are engaged.

The height of the beam 111 can change the position _ a nut 112 on a threaded pin llj? set; v / earth. To the air tube 9 ^ - with the disks 90, 91 except To hold engagement, the lever 104 is rotated clockwise so that the catch 107 in the groove 106 is engaged.

The third folding or folding station (Fig. 7> 8, 12, 13 and 14) contains a pair of rollers 114 and 115, which have a vertical axis and the height of which is less than the width of the folded strip. An idle roller II4 is arranged by ball bearings II6 on a pin 117 which is carried by a rod I18 which is firmly connected to ([the frame 56. The roller 115 is arranged by ball bearings II9 in an idle position on a bearing pin 120, which is in a forked element 121 and 122 is inserted, which is firmly connected to a bushing 125 which in turn is placed on a bearing pin 124 which is carried by a carrier 125 which is firmly connected to the frame 5 '.

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A lug 126 is also provided on the outer surface of the socket 123 and an extension 127 is on outer carrier 125 is formed.

A pivot pin 128 gravity-fed into a a plurality of holes 129 formed in the extension 127 is in the boss 126 introduced.

A lever 130 is firmly connected to the socket 123, which has a handle IJl to rotate the Bushing 123 to control pivot pin 124 to turn the whale : -: e II5 to bring the roller 114 into engagement or to release.

The frame 56 further carries a carrier 132 (Fig. I ² O, which carries a pivot pin 133, the threaded end to V a / eist, associated with which two nuts 134 and 135 in engagement.

A cylinder Ij6 that has a bearing journal at one end 137 is connected, is placed on the bearing pin 133. A preloaded helical compression spring 13S is around pounds the pivot pin, and this spring, logs itself at one end to the head of the journal 133 and attaches at the other end against a mother the end of the cylinder 136 is screwed. The journal 137 is firmly connected to a link l40, the is in turn firmly connected to the socket 123. The clockwise rotation of the lever I30 gives the

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V / roller 115 free from V-roller 114 and causes another Compression of the fires 138 as a result of the sliding movement of cylinder 1;> 6 moving away from the carrier 1J52.

The fourth folding or folding station (Fig. 7, 8, Yc, 1 ~ j and 14), like the third station, has two rollers i ' ^: 1 and 14-2 in a vertical axis, the height of which is at least equal to the entire width of the folded Strip is.

The empty roller l4l is supported by ball bearings \ hj> and l44

AUL ¹ a bearing pin 145 is disposed, which is on a Trä-% _t he IHO mounted, which is fixedly connected to the frame 5 <5, viährend the roller is mounted by ball bearings 147 and a bearing journal 149 142, the bifurcated into two elements 150 and 151 is introduced, which are firmly connected to a bush 152 which is placed on a bearing pin 153 which is carried by a carrier 154 which is firmly connected to the frame 56.

A lever 155 * which is provided with a handle 156 and a lug 157 are attached to the socket 152. A pin 153, which by gravity in holes 159 a Extension 16O of carrier 154 is inserted is shown in FIG the approach 157 introduced.

Furthermore, the fourth folding station contains a structure similar or identical to that shown in FIG. 14, ie a carrier 1J2 ¹ which carries a bearing pin I33 ¹ which has a threaded end with which two nuts 13 ^ ^! and

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155 'are engaged. A cylinder IJ> 6 ^X is placed on the bearing pin lj> y , and this cylinder 136 ¹ is articulated at one end to a pivot pin 137 *, which is firmly connected to a connecting link l4o ', which in turn is firmly connected to the bush 152 . A coil spring like the coil spring 1J58 is enclosed ^{within the cylinder I36 1 in the manner shown in FIG.}

Located between the fourth folding or folding station and the group 9 for winding up the folded strip an idle guide roller Ιοί, which is from the frame 56 is worn. On a wave 162, which * * also on Frame 56 is arranged, a sprocket l6j5 is keyed, which by a chain 164 and a sprocket I65 with a Drive motor I66 is connected, which is mounted on the base of the frame 56.

The group 9 for winding up the folded strip (FIGS. 7 and 8) has one which is keyed onto the shaft 162 Roller 167 and a roller 168 which is rotatably mounted on one end of a lever I69, the other end with a bearing pin 170 is connected, which is inserted into a carrier 171 which is firmly connected to the frame 56 is. The lever * 169 is provided with an extension 172, which with an extension 175 of a control lever

174 is in engagement, which is also on a bearing pin

175, which is inserted into the carrier 171.

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The reference numeral 168 'indicates the position of the roller 168 in contact with roller 167 before starting winding of the folded strip on, i.e. the production of a winding roll I76 on.

The device shown in the figures can also serve to perform a second UmIegevorgang on the to execute the same strip. For this purpose there is a storage location 6, a centering device 7 and a folding station 8 provided.

Three rollers 177 * 178 and 179, which are arranged on the frame 50, are provided for conveying the strip, which is provided with a fold on both sides, and the storage cell 6 (respectively 1 and 7). The rollers 177 and 179 are idle rollers, while the roller 178 is on a VJelle 180: ü: hurries, on which a sprocket lol is also keyed, which is connected by a chain 162 to a sprocket 183, which is on the while of the motor 166 is wedged. The storage location ό is provided with two photoelectric cells 184 and 185, which control the feeding of the strip to the centering device 7. The last-mentioned device is the same as the centering device 4 and is fastened to the opposite end of the frame 56 and is still provided with bearings bO ^! provided, in which a hollow shaft 61 ^{1 is} inserted, also with a scale graduation 62 *, on which two guides 63 ¹ and 64 ^{f are} slidably arranged. the

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second folding device is equal and symmetrical to the first, therefore, the corresponding parts are provided with the same reference numerals but with an index, and a no further description is given.

Around the strip 187, which is provided with the two desired folds, to the winding device lead, a roller I86 is provided, which is carried by the frame 56.

In order to make the device described above work, the strip is passed on the splicing table 1, through the storage locations 2 and 3, the lengths of which are appropriately adjusted, and also on the centering device 4 between the guides 63 and 64, which by means of the screws 65 and 66 are set in the desired position, on the disk 72, from which the VJaI- ■ / .e 76 is temporarily separated by means of the screw 89, on the disks 90 and 91 »from which the air tube 94 by turning the lever 104 clockwise is removed (which is now in the '104' position of Fig. 7), and by engaging the lock 107 in the groove 106, between the rollers 114 unu il5> which are temporarily separated from each other by turning the lever IjJO clockwise. rden, the lever I30 is fixed in the new position by the pin 128 in the Kig. 12 visible hole 129 is inserted between the rollers l4l and 142, which is also made by turning the lever

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155 are temporarily apart from one another in the clockwise direction so as to insert the pin 158 into the in Pig. Introduce 12 visible hole 159, which, with its extension 172 ^m it of the extension 172 of the lever lt> 9 communicates around the roller 16I and between the rollers I07 and 168 are temporarily removed by turning in a clockwise direction CTEA lever 174 from each other in engagement, and the roller 168 raises.

When it is desired to provide a second fold on the strip, it is forced to travel from roller lol to roller 177, between rollers 17c and 179> through M the storage location 6 and the centering device, and finally. After being between roller 76 'and the disk 72 'has been inserted between the air tube 9 ^ -' and the disks 90 'and 91 ¹ and between the roller pairs 114', 115 'and 14l', l42 ^! , and the strip is then fed around roller 186 and between rollers I67 and I68.

The operation of the device is as follows: The pieces obtained by obliquely cutting a cord fabric

are fed from the cutting tool to the table 1 and ^ are spliced together by an operator to form a continuous strip I87.

If the splicing or joining process is interrupted becomes, the photoelectric cell 15 stops the motor 26, which feeds storage location 2. By operating the foot control lever l6 it is possible to use the microswitch

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l8 to start the motor 2β again or in To turn off in case of danger.

The strip 187 travels along the plate 10, with which it is kept in contact by means of the roller 19, and it then migrates onto rollers 48, 49 and 50 between the roller pair 40, 46 and is stored in the memory location 2.

At this storage location 2 is the forward movement of the woven fabric strip through the photoelectric cells 52 and 53 controlled so that if the strip 187 (Pig. l) moves down below the level of cell 52, the latter stops the motor 26 which feeds the storage location 2; otherwise stops if the strip 187 moves above the height of the photoelectric cell 52, the latter the motor 27, which feeds the auxiliary storage location 4.

The speed of the motor 26 is about twice that of the motor 27 * in order to regain the time during which the strip is held stationary upstream of the motor 26 to allow splicing. To enable the pieces forming the strip to be put together.

From the Spelcherstelle 2, the strip 187 migrates between the pair of rollers 41 and 47 and onto the roller 51 and in this way forms the memory location 3 through which the centering device 4 is fed. The storage location 3 is provided by the photoelectric cells 54

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and 55 controlled.

If the strip I87 moves down below the level of the photoelectric cell 55, the latter stops the motor 27; otherwise, if the strip I87 rises above the height of the photoelectric cell ^ h , the latter stops the motor 166, which advances the strip at the same speed as the motor 27.

In the centering device 4, the strip iS? between the centering guides 63 and 64 and then between the hollow roller el and arranged on the bearing journal 60 the roller 70 guided. The strip moves from this roller to the first transfer station through the roller 71

When the strip 187 reaches the disc 72, it is brought against the edge of the disc by means of the roller 76 resiliently pressed, and due to its own weight and the tension generated by the pulling motor 166 its edges protruding from the sides of the disc 72, ceilings bent downwards.

In the second folding station, the oblique ränaer of the strip 187 against the faces of the disks 90 and 91 by the air tube 94. In the third The folding station presses the pair of rollers 114 and 115 and allows the two edges of the strip 187 to run simultaneously the fold stick together, and in the fourth folding station the pair of rollers 14l and 142 presses the two edges of the strip delimited by the fold together and

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lets them stick together completely.

If a single longitudinal fold of the strip 187 is required, the strip is removed from the fold 5 and

ter roller 161 and then between rollers 167 and 168 and is wound onto the latter, whereby the roll 176 is produced.

If, on the other hand, the strip with a second longitudinal fold is to be provided, it wanders on the roller 161, under the roller 177 and then between the two rollers 178 and 179 and forms a third storage location 6 which feeds the centering device 7. The location 6 is provided with two photoelectric cells 184 and 185. The first stops the motor 27 when the strip 187 goes down below the height of the photoelectric cell 184, while the photoelectric cell 185 moves the Mobor 166 stops when the strip I87 moves all the way up above the height of the photoelectric cell 185.

The strip 187 then becomes the centering device 7 fed and is guided through the ümfaltstation 8, where it is subjected to a second folding process according to the method which is the same as in the case of the folding station 5.

At the exit point of the Umfaltstation 8 migrates

Strip 187 under the guide roller I86 and then between ν the rollers 167 and 168 in order to produce the winding roll 176.f By means of the device described in accordance with ^a

Invention, it is possible to meet the requirements |

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to get the exact shape of the strip. This strip that between the panes and that coupled with them The air tube is initially folded over, is not subject to any deformations, since the air tube, which is on a relatively low pressure is inflated, the strip is white: / e ^ enüie presses the panes, but precisely determines the fold, and only spatula becomes the strip between the VJaI-zenpaar squeezed together so that his shoulders. by refolding separate parts are attached to each other.

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Claims (10)

Claims flJ device for continuous forming at least a longitudinal fold on a longitudinally moved strip of flexible material, in particular of rubberized material Tissue, using a device advancing the strip in the direction of its length by at least one disc that cooperates with an annular air tube, its central circumferential plane with that of the disc. 2. Apparatus according to claim 1, characterized in that at least one pair of rollers is provided behind the air tube and the disc cooperating with it is arranged, and its axis opposite the axis of the Luftroiies is offset by 90 °. J). Apparatus according to claim 2, characterized in that at least one pair of rollers is provided which has a width which is smaller than the width of the folded strip passing between the rollers and at least one further pair of rollers is provided which has a width at least equal to that of the manufactured strip. 4. Device according to one of the preceding claims, characterized by a centering device for the Strip, which is arranged in front of the air tube, seen in the direction of movement of the strip. 5. Device according to one of the preceding claims, characterized by at least one memory location for the strip, which is arranged in front of the air tube as seen in the direction of movement of the strip. 6. Device according to one of claims 2 to 5, characterized by three discs with a horizontal axis, which are arranged side by side and in the same plane and are provided with a circumferential groove, and by means of an endless flexible element introduced into the groove with one another connected, and two consecutive disks New documents γ $ _9§β ψμ ^ & $ J * change, ν. 4.9. im7i 10988 7/04 92 ■■, .., .., ben work together with an air pipe whose mid-circumferential plane with that of the discs, as well as an adjusting device, which gives the air tube two fixed positions, one corresponding to engagement with the two disks and the other in a release liner, and two Roll pairs have vertical axes, one of which has a width smaller than that of the folded strip and the other has a width at least equal to that of the folded strip, and that a separating device for the Rollers of the same pair and a device is provided that they automatically come back into mutual contact brings. ^ 7. Apparatus according to claim 6, characterized marked ™ advised that the first of the slices with a roller be more horizontal Axis cooperates, which can be pressed elastically against the upper edge of the disc, and the two following Discs work together with the annular air tube. . 8. Device according to one of the preceding claims, characterized in that at least two units are provided for splitting the strip. 9. Device according to one of claims 4 bi ^ 8, characterized characterized in that the centering device is provided with adjustable parts for the movement of the strip to limit on both sides of the centering device. 10. Device according to one of claims 1 to 9 * ge J characterized by a connecting table for connecting pieces that are to form the continuous strip, and a photoelectric cell for interrupting the advancement of the strip downstream of the cell, and a mechanism that controls the forward movement and the connection a table upstream of the storage location for the strip to be turned over is arranged. 109887/0492 Blank page